Select process 'javaw.exe' near the bottom ('java' for Linux). (Please note: If you have downloaded the standalone, select 'Minecraft.exe' from the list instead.)

Get at least 3 of some block type in your quick slot.

Start a new search and search for that quantity.

Drop an item (Q).

Search for the new value.

Drop another (or pickup the old one, doesn't matter).

Search for the new value. You should only have a few now. Repeat until you only have ONE entry.

Double click to add entry.

If you wish to change the quantity of your items, simply double click the value in the bottom pane and change it to what you wish (not higher than 65000)

To change the item type, right click the new entry and choose 'Browse this memory region'.

Exactly 8 bytes to the right of the block's quantity is the block's type. Compare with the hex values found here.

To change the type, copy the decimal value from the data values page, double click on the type in the memory viewer, select 2 bytes, and paste. You can do this for items (e.g. Ingots) as well as blocks.

NOTE: to change the block type, you need to resume/repause game so the memory can refresh and record the block type which is obtained by resuming.

To make an inventory, Open a world's inventory by using the load button, or create a whole new inventory by clicking the new inventory button (both located at upper left of the window).

Choose what item you want on the right of the window and drag it into an item slot. Then click select the item, and at the top right, change the quantity and/or its damage. You can also use this to stack unstackable items, such as tools or doors etc.

On the right side of the save button is an arrow pointing down, hold the mouse over the arrow and a list of all of your worlds. Save to <your world's name>.

Notes:

<your world's name> is the world that you're saving the inventory to.

You can't inventory edit while a world is loaded in game. You need to be at the Minecraft title screen, World select, or have Minecraft shut down.

NOTE: If you freeze your value traveling from Nether to Overworld or Overworld to Nether this will move the address where you HP is stored, possibly leading to data corruption and crashed games and also removing invulnerability. You can reapply invulnerability while in the Nether, though, and it works fine.

NOTE 2: If you wade in lava or fall off of something, then close the game and reload it, you may be dead.

NOTE 3: In update 12w16a, vanilla cheats have been added, and most of the hard work doing these cheats will be replaced with easy access with the new vanilla cheat system if the server allows it.

A cube of destruction is actually a n*n*n cube of TNT, that has been frozen at byte size 46. This means that when you set the TNT off, it will spawn another block of TNT there rather than the byte size going to 0 (air).

There are several occasions within the game where blocks can 'overlap' with a player. For example when a mod or plugin is preventing a player from breaking a block. For a split second the client will still read it as broken and the player can move forwards. This can cause a block overlap which can 'teleport' the player.

It works by moving the player up until there is a space (or down if they're at sky level). It's used in PvP or faction servers to attack a base (or used in your own to avoid placing a door at all). It's also helpful on larger builds where even climbing ladders takes time.

Cheating may result in a player getting banned/kicked in multiplayer servers, due to server administrators installing anti-cheat plugins that can automatically kick or ban a player if cheats are detected. Because of this, many hacking methods only work in single player. Cheating in multiplayer is often frowned upon, aside from the rare exception (it is your server). You also may never get to play that server on that account again.

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